enumerate with offset

files/file-enumerate

@@ -11,6 +11,7 @@ Usage: file-enumerate [-k] [-p #] [-o folder]
   -p  Pad numbers, defaults to 4
   -o  Output folder name, default: enumerated
   -c  Copy instead of hard link
+  -i  Offset. start from number (default 1)
 '
 exit
 }
@@ -18,6 +19,7 @@ keep=false
 pad=4
 output=enumerated
 hardlink="-l"
+offset=1
 for (( i=1; i<=$#; i++ )); do
     j=$(( i + 1 ))
     [[ "${!i}" = "-h" ]] && _help
@@ -26,12 +28,14 @@ for (( i=1; i<=$#; i++ )); do
     [[ "${!i}" = "-k" ]] && keep=true
     [[ "${!i}" = "-p" ]] && { pad=${!j}; i=$(( i + 1 )); }
     [[ "${!i}" = "-o" ]] && { output=${!j}; i=$(( i + 1 )); }
+    [[ "${!i}" = "-i" ]] && { offset=${!j}; i=$(( i + 1 )); }
 done
 
 printf -v padstr "%%0%dd" $pad
 
 _drive() {
     ls -1p | grep -v "/$" | sort -V | cat -n | while read n f; do
+        n=$(( n + $offset - 1 ))
         printf -v padded $padstr $n
         if [[ $keep = true ]]; then
            printf -v outname "%s.%s" "$padded" "$f"